-1971- - north dakota · tm 5754 142-71-35000 183 177-183 8-20-70 24 4.3 177 48 106 9 .6 647 293...

Addendum ToNorth Dakota Geological Surve y

BULLETIN 49

North Dakota State Water Commissio nCOUNTY GROUND-WATER STUDIES I

GEOLOGY AND GROUND-WATER RESOURCES OF KIDDER COUNTY, NORTH DAKOTA

B yCharles E . Napli n

Ground-Water Geologis t

Published B y

North Dakota State Water Commissio nState Office Buildin g

900 Boulevar dBismarck, North Dakota 5850 1

-1971-

CONTENT S

Explanation

TABLE S

Table I - Chemical Analyses 2

2 - Water Levels in Selected Observation Wells 4

3 - Logs of Test Holes

1 3

ILLUSTRATION S

Figure I - Map of Kidder County Showing Location of Selecte dTest Holes and Wells 1 2

Pag e

1

EXPLANATIO N

Glacial drift aquifers in Kidder County, North Dakota, offer considerabl e

potential for the future development of irrigation in this area . Irrigation

development is directly related to the availability of ground water i n

Kidder County . Therefore, it is necessary that an accurate determinatio n

of aquifer thickness, lithology, areal extent, and the chemical qualit y

of ground water be made to insure the proper utilization of this resource .

When the original ground-water study was made in Kidder County, smal l

diameter observation wells were not installed as part of the field procedure .

As a result, very few water-level and chemical quality data were collected .

In 1970 supplementary test drilling was initiated to gather additional dat a

on water levels, aquifer characteristics, and water quality .

Parts I, II, and III of Geology and Ground-Water Resources of Kidde r

County, North Dakota should serve as text material to explain the glacia l

geology and hydrology of Kidder County . The following tables list data

collected during the recent ground-water investigation and are meant t o

supplement the main report .

-1-

(Analytical results in parts per million except as indicated )

D,nlh of

Date 01

Total

Moo-

Potas- 8 .088-

Car-

Manga -

0wner co

Well

Screened

Collec-

Silica Iron

Calcium 808151 Sodl um

tim

bo08[e 0008 . Sulfate

es

Chlorid e

_ oescrlptlon Location

Interval tlon (5100) (Fe) (Co) (89). (Na) (K) (MCO 3 ) (CO 3) (504) (Mn) (CI)

Tn 3634

138-71- 6ced l

80

77-80

9-23-68

31

0 .20

70

18

97

11

407

128

1 .10

3 . 9

Virgil Rote 138-71- 7000

83

68-83

8-28-68

29

0 .0

78

10

48

6 .3

333

73

0 .65

4 . 4

Virgil Rott

138-71- 7808

85

70-85

10-29-68

31

0 .0

68

21

101

II

418

26

0.95

2 . 7

TN 5771

138-72- 1000,

113

107-113

8-31-70

27

0 .28

68

22

75

403

0

84

0 .88

4 . 7

(South Well )

TN 5771-A

38-72- 1000 2

63

57-63

8-31-70

28

0 .52

75

20

22

3 .9

332

0

48

0 .99

(North Moll )

78 5770

138-72- Iccc

78

72-78

8-31-70

28

0 .05

77

21

76

7 .6

411

0

110

1 .00

2 . 1

Walter

138-72- lace

90

7-28-70

28

0 .28

66

21

68

7 .1

359

o

116

0 .93

0 . 9

Na 1810898 1

TN 5774

38-72- 7000 1

143

137-143

9- 1-70

25

1 .5

69

12

127

6 .9

479

0

107

0 .31

6 . 7

(East Well )

TN 5774-A

138-72- 7000 2

50

47-50

9- 1-70

27

1 .6

77

16

110

7 .0

430

0

42

0 .87

7 . 4

(W,. .1 Well )

Virgil 10-13-68 3o 0 .82 70 22 103

429 0 133 0.70 3 . 3

r. Maltc r8,4110808 1

TN 5916

38-73- 80dd

213

207-213

11-30-70

22

4.7

37

16

380

II

653

400

0 .03

29

81

0 .01

5 . 6Richard

139-71- 000c

3 4ueui v

8-19-70

26

0 .18

94

28

17

4 .3

354

0

Tn 5772

139-71-29c88

148

142-148

8-31-70

25

5 .5

40

254

531

0

196

0.30

5 2

1,chard

139-72- 2001,

106

---

7-28-70

28

0 .34

102

18

45

7 .0

352

0

113

1 .10

1 5

00811 8

rN 5760

139-72-246661

203

197-203

9- 3-70

24

0 .74

67

100

B .9

401

0

09

0 .84

7 . 2

(nest Well )

TN 5760-8

139-72-n1,bh2

83

77-83

9- 3-70

31

0 .12

118

23

57

475

0

131

0 .84

7 . 4

(Eont Well)

TABLE 1 - Chemical analyses (Continued )

(Analytical results in parts per million except as indicated )

Deem of

Date of

Total

nag-

vo tas- sitar-

Car-

88088 -

Owner or

Well

Screened

Collec-

Silica Iron

Calcium n tim

Sodium

i mbonate bonate Sulfate

es

Chloride

Description Location (Feet) Interval [ion (5100) (Fe) (Ca) (Mgl (Ne) (K) (800 3 ) (001 ) (504) (Mn) (CI)

TN 5776

139-72-31888

163

157-163

9- 3-70

32

0 .0

51

9 .7

91

7 .2

397

48

0 .07

6 .9

TN 5775

139-72-31000

344

338-344

9- 2-70

34

0 .24

27

0 .3

271

7 .5

572

113

0 .02

56

(South Well )

TN 5775-A

139-72-3100d 2

163

157-163

9- 2-70

31

2 .10

61

20

107

8 .5

417

102

0 .50

9 .8

(North Well )

Tn 5778

140-71-19000

123

117-123

8-21-70

23

0 .80

87

25

214

18

605

280

0 .51

2 6

Recorder

140-71-28068

60 Perforated

8-25-70

23

0 .72

55

18

68

6 .3

333

86

0 .48

7 . 2

Wel l

TO 5913

140-71-28088,

68

62-68

11-16-70

23

0 .03

70

33

47

4 .7

340

114

1 .50

5 . 7

(South Well )

TM 5913-8

140-71-280882

33

30-33

11-16-70

22

0 .18

68

26

6 .6

2 .0

239

81

0 .01

3 . 0

(North Well )

78 5753

141-70- 6baa

143

137-143

8-19-70

27

1 .3

128

38

44

5 .3

545

109

0 .69

8 . 0

Lawrence

181-74-14060

30

9825864

21

0 .12

204

88

204

15

289

103 0

'Melhoff

Patterson

142-70-16060

107

83-107

10-25-65

30

.7

73

24

3 .9

300

5o

Land Co .

26

2 . 9

59

1 .00

3 . 4Fat lerson

142-70-16060

10 0Land Co .

7-21-70

28

0 .0

89

21

9 .2

3 .4

33 6

TM 5754

142-71-35000

183

177-183

8-20-70

24

4 .3

177

48

106

9 .6

647

293

0 .30

Floo-

Tote!

TotalHardness

r

Sodium

Specific

_

ride

Nitrate Boron Dissolved As C .CO

Noncer- Sodiun, Adsorption-

Conductance

Irrigatio n1 LNO3)

(8) 50, 185

3 bonete (Micronhos 25° C) pH Classification Rrmarks_

0 .27 541 251 44 2 .7 842 7 .9 13-S I

0.24 423 236 30 1 .4 649 7 .7 C2-SI Pumping Rate 900 qpm

0 .73 564 255 45 2 .7 874 7.6 13-51 ramp in, a,i 1 .

595

ire

0.09 477 260 0 38 2 .0 741 7 .9 C2-5 1

0 .06 346 271 0 15 0 .6 565 8 .0 C2-5 1

0 .18 495 279 0 36 2 .0 788 7 .9 C3-5 1

0 .19 451 252 0 36 I .9 726 7 .7 C2-SI Puq,inq Rate 900 08,.

0 .12 557 220 0 55 3 .7 899 7 .8 C3-S I

0 .09 586 258 0 47 3 .0 892 7 .8 C3-5 I

0 .16 576 267 0 44 2 .7 882 7 .8 C3-5 1

0 .90 1170 158 0 83 13 1830 7 .9 03-5 3

0.17 422 352 62 9 0 .4 681 8 .0 C2-S i

0.99 884 146 0 78 9 .1 1350 7 .8 C3-S 2

0 .26 511 331 42 22 1 .1 786 7 .5 C3-51 Pooping 71a1r 800-9110 00

0 .12 538 237 0 47 2 .8 833 8 .1 C3-S I

0 .30 613 391 24 1 .3 938 7 .9 C3-51

0 . 2

0 .1

1 . 0

0 .0

. 0

0 .4

2 . 5

0 .4

3 . 5

0.7

0

0.2

0 . 6

0.4

1 . 0

0 .2

0. 1

0.2

0

Ilou-

-- Total Total Hardness % Sodium Specific

ride

Nitrate Boron Dissolved As 0.003 Noncar- Sodium Adsorption- Conductance Irrigation

(F)

(NO ) ) (81 Solids boneta Ratio (M erce6os 250 C) pN Clessif icatlon Remarks

0.1

1 .0 0.115 418 167 53 3 .1 786 7 .9 03-S l

0.1

2 .5 0.4) 781 69 88 14 1260 8 .0 C3-S 3

0.1

1 .0 0.19 539 234 49 3 .0 833 7 .9 C3-S I

0.2

1 .0 0 .71 966 321 58 5 .2 1420 8 .2 03-5 2

0 .4

2 .5 0 .05 392 211 40 2 .0 762 8 .2 C3-SI Diameter 8

inche s

0 .2

1 .0 0 .42 447 310 31 23 1 .1 724 8 .0 02-S I

0 .2

1 .0 0 .35 )24 276 80 5 0.2 514 8 .1 C2-S I

0 .2

0 .3 0 .06 632 478 31 16 0.9 967 7 .7 C3-S I

0 .3

0 .0 0.00 1860 870 634 33 3 .0 2140 8 .0 03-SI Pumping Pate 15 or '

0 .4

0 0 .08 344 280 34 6 .6 0 .2 543 8 .0 C2-SI Pumping Rate 500 00m

0.4

0 0 .33 344 310 34 6 0 .2 610 7.7 02-5I Pumping Rate 700 gpm

0 .1

0 0 .18 992 638 108 26 1 .8 1450 7.6 C3-S I

TABLE 2 -- Water Levels in Selected Observation Well s

Depth to Water, in Feet Below or (+) Above Land Surfac e

Test Hole 5771

138-72-laaal (South Well) Depth 113 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Aug . 31,1970

13 .90

Nov . 30

12 .7 5

Dec. 28

12 .69

Feb. 9, 1971

12 .4 2

Mar. 8,

12 .5 0

lest Hole 5771-A 138-72-laaa2 (North Well) Depth 63 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Aug . 31, 1970

15 .62

Nov . 30

13 .7 1

Dec . 28

13 .64

Feb. 9, 1971

13 .5 9

Mar. 8,

13 .47

Test Hole 5770 138-72-lccc Depth 78 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 3,1970

48.8 2

Nov. 30

45 .3 7

Dec . 28

45 .73

-4-

Test Hole 5774 138-72-7aaa l (East Well) Depth 143 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept. 3, 1970

+ .2 8

Nov . 30

+1 .5 3

Dec. 28

+1 .7 5

Feb. 9, 1971

+1 .74

Mar . 8

+1 .7 5

Test Hole 5774-A 138-72-7aaa 2 (West Well) Depth 50 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept. 3, 1970

8 .5 0

Nov. 30

7 .04

Dec. 28

7 .0 7

Feb. 9, 1971

6 .74

Mar. 8

6 .64

Test Hole 5916 138-73-8ddd Depth 213 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Mar. 17, 1971

4 .90

-5-

Test Hole 5772 139-71-29ccc Depth 148 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 3, 1970

32 .3 3

Nov. 30

22 .6 2

Dec. 28

22 .7 4

Feb . 9, 1971

22 .6 8

Mar . 8

22 .6 8

Test Hole 5760 139-72-24bbbl (West Well) Depth 203 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept. 3, 1970

30 .40

Nov . 30

29 .3 3

Dec . 28

29 .52

-6-

Test Hole 5760-A 139-72-24bbb 2 (East Well) Depth 83 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 3, 1970

32 .5 0

Nov . 30

.32 .3 1

Dec . 28

32.3 0

Test Hole 5776 139-72-31aaa Depth 163 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 3, 1970

32.9 0

Nov . 30

32 .0 5

Dec . 28

32 .1 4

Feb. 9, 1971

31 .9 1

Mar . 8

31 .98

Test. Hole 5775 139-72-31ddd 1 (South Well) Depth 344 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 3, 1970

14 .0 3

Nov . 30

13 .92

Dec . 28

13 .89

Feb . 9, 1971

13 .78

Mar . 8

13 .76

-7-

Test Hole 5775-A 139-72-31 ddd2 (North Well) Depth 163 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept. 3, 1970

13 .5 0

Nov. 30

12 .9 7

Dec. 28

12 .9 2

Feb. 9, 1971

12 .7 8

Mar . 8

12 .74

rest Hole 5758 140-71-19ddd Depth 123 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 3, 1970

21 .3 2

Nov. 30

20 .66

Dec. 28

20 .6 0

Recorder Well (8-inch diameter) 140-71-28bba Depth 60 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 30

13 .46

Oct . 26

13 .66

Nov . 30

13 .98

Dec . 28

13 .0 2

Feb. I, 1971

12 .9 7

Mar. I

12.86

-8-

Test Hole 5913 . 140-71-28daa 1 (South. Well) Depth 68 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Mar. 17, 1971

12 .52

Test Hole 5913-A 140-71-28daa 2 (North Well) Depth 33 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Mar . 17, 1971

10 .30

Test Hole 5753

141-70-6baa

Depth 143 fee t

Sept .

3, 1970 43.2 5

Nov . 3Q 42.8 9

Dec . 28 43.0 8

Feb .

1, 1971 43.18

Mar .

1 43.20

-9 -

PL Co. 6 (3-inch diameter) 142-70-9aaa Depth 90 fee t

Date Water Level

Date

Water Level

Date

Water Leve l

Sept .

30, 1970 67 .3 5

Oct .

26 67 .4 3

Nov .

30 67 .2 2

Dec .

28 67 .3 5

Feb .

I,

1971 67 .4 5

Mar .

1 67 .52

PL Co. 5 142-70-16ddd Depth 70 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept. 30, 1970

21 .84

Oct . 26

21 .7 2

Nov . 30

21 .5 3

Dec . 28

21 .6 4

Feb. 1, 1971

21 .7 0

Mar. 1

21 .44

Test Hole 5754 142-71-35ddd Depth 183 fee t

Date

Water Level

Date

Water Level

Date

Water Leve l

Sept . 3, 1970

9 .7 5

Nov. 30

6 .4 2

Dec . 28

6 .5 2

Feb. 1, 1971

6 .5 5

Mar . I

6.54-10-

Test Hole 5751 144-70-26«c Depth 343 fee t

Date Water Level Date Water Level Date Water Leve l

Sept .

3, 1970

i-

. 5

Mar .

17, 1971

+1 .3

FIGURE 1 -- MAP OF KIDDER COUNTY SHOWING LOCATIO N

OF SELECTED TEST HOLES AND WELLS

NM"

•nv..nnn.noOn...oOnn.n.On.nnOn m.. M.n.Mnnn.Mn...Mn....

n nnn nnnnMnnnnMnnnnMnnnnn' nnn nnnnMnnnnMnnNMnnnnn

..n n n..nM .nM.

MI - ON r": 111 111nn I nnn I nnn I nnn I nn!Inn1 : ihi 111III 111111iit

1ifn N »-1gR1I1C.M.MnENimMEMO n

1 :_ :ACU5 mIIINn n ce nntnMnnnnnnnnnMMnt?in

11 .n nn ...n.nnMnn Mnnn nn. nn..MlAnMnnn.Mnnnnn

~en

j

n n.n . n..n..n/ Jn. nn► `In~I..n.n n.n r... .n/ n.Mnn..dnnn!nn

n n.n ..n....\ `Vnn.nOnn.Mn .nn n.n....~Ir11M nnnMnm p pn: pE~n N N:n Ma... MOMM MMMU :WPn 1:1110nnn n~JM nnnMnnnn~n`+n~nnnn'TI Ill... ma,.,

sIi Sa-oleoSI x .>r

~~igfi•r'.d© ~!!~_Ix .sI{ KSENMSix! 1

MOD niyiiunM.nn ~iniirnMnnnnnnn n.nnnnMref! Mnq nnnnn ~SI IN I (CCC1 *:~MIEI 1 EMI I... r..•~ .r.a~E S.M.M.nnn/nn1I/nn"

--~`:• nnn nM MU.nnn''i.U.n nnMnnnnnnn NnnnYJ

" : C~11 t• X111" 1111 xt 1111 'MnnnnMnnnnMnnnnM"...

::11III III 11II1r''~N T•M

.73*

H92M

NTI vSCALE IM MILE S

FIGURE 1-- MAP OF KIDDER COUNTY SHOWING LOCATION OF SELECTED TESTHOLES AND WELLS

EXPLANATIO NTEST NILE, LOO IN TAAL( (MMIATION WEL L0NECOIOEN MELL

NGIIEICATIONS USED MIT NYOKE S21INOL 0-0MATEM-IJI EC ISEASNIVENT( I NTAIILE (LOO IN TNSLE 50-ANALYSIS IN TONL E

YDPE TNNN ONE NELL AT 1HI SLOCATION011LT TEST NJLES ONKL(O I N7510 ARE SNOMT I

1 2

TABLE 3 -- LOGS OF TEST HOLE S

Explanation of Litholoyic Symbol s

Gravel or sand and grave l

o• . :is

Boulder clay (till )

Silty clay (ylaciofluvial sediment )

Shal e

The lollowiny lest hole loys are a summary of data from th e

driller ' s logs, geologist's sample descriptions and the resistivit y

and potential electric loys .

Grain size classification is C . K . Wentworth's scale fro m

Pettijohn (1957) .

Elevations are based on mean sea level datum as represented o n

and interpreted from the Dawson, Steele, Steele Northeast, Steel e

Northwest, Tappen North, Tappen South, Tappen Northeast and Tappe n

Southeast, U . S . Geological Survey, topographic maps .

Test holes are called observation wells when they have bee n

completed as wells with 14-inch diameter plastic casiny .

-1 3-

138-71-6ccd lTest Hole 563 4

Elevation 1812 feet

DATE DRILLED: 9-18-68

Geologic

Thickness

Depth

source

Material (feet) (feet )

Glacial Drift :Sand, fine- to coarse-grainedoxidized 30

3 0Silt,

clayey,

olive

gray ,laminated 20

5 0

Gravel, sandy,

fine to coarse ,predominantly limestone an dgranitics,

some shale 30

80

Clay,

(till) 10

90

Observation Wel lDepth 80 fee t

Screened interval 77-80 fee tChemical Analysi s

Electric Log

-14-

138-71-7bb aTest Hole 3635

Elevation 1811 feetDATE DRILLED : 9-18-68

Geologic

Thickness

Dept h source


Glacial Drift :Sand, coarse-grained, well -

sorted 30 30Clay,

silty, olive gray 5 35Sand, gravelly,

fine- to very coarse -grained, angular to rounded, poorl ysorted 48 83

Clay,

silty, pebbly, olive gray --- 7 90


Screened Interval 77-80 feetChemical Analysi s

Electric Lo g

-15 -

TEST HOLE 577 3LOCATION: 138-71-18ccc

DATE DRILLED : August 31, 197 0

ELEVATION : 1810

DEPTH : 380(FT )

DESCRIPTION OF DEPOSIT S

Glacial Drif t

0-}

Topsoil, very sandy ,

silty, brown ,

}-31

Sand, very fine-to medium-grained, subangular to sub -rounded, moderately wel lsorted, oxidized to abou t10 feet below land surface ,

31-36 Clay, very silty, slightl ysandy, dark yellowish-brown ,partially oxidized (glacio-fluvial sediment) .

36-42 Sand, very fine-to coarse -grained, well-sorted, sub-angular to rounded .

42-281

Clay, silty, slightly sandy ,pebbly, olive gray (till )

(FT, MSL)

TEST HOLE 5773 continue d

LOCATION : 138-71-18ccc DATE

DRILLED: August 31,

197 0

ELEVATION : 1810 DEPTH : 38 0

(FT, MSL) (FT)

POTENTIAL (MV)

RESISTANCE (OHMS)


281-298

Clay, silty, sandy, pebbly ,

very gravelly, olive gray (till) .

298-308

Sand, fine-to very coarse -

grained, subangular to rounded ,260

~

moderately well-sorted .

.398-369

Clay, silty, moderately sandy ,

pebbly, olive gray (till) .

Pierre Formatio n

369-380 Shale, siliceous, grayish -black to black, indurated ,

bedded, non-calcareous .

Electric Log

-17-

TEST HOLE 577 1

LOCATION: 138-72-Iaaa

ELEVATION: 176 5

;FT, MSL )

POTENTIAL (MV)


DEPTH : 180(FT )


Glacial Drif t

0-1

Topsoil, very sandy, silty ,

brownish-black .

1-3

Clay, silty, very sandy ,

pebbly, moderate yellowish -

brown, oxidized (till) .

3-70

Sand, silty, slightly clayey ,

very fine-to medium-grained ,

subangular to subrounded, well -

sorted, slightly oxidize d

upper 20 feet of section, takin g

water, occasional clay lense s

lower 10 feet of section .

Clay, very silty, sandy, olive

gray with light olive gra y

mottling, highly calcareous

(glaciofluvial sediment) .

96-100 Gravel, moderately sandy, fineto coarse, angular to rounded ,

moderately well-sorted, taking

water, caving slightly .

100-103



103-114 Gravel, slightly sandy, occas-

ional thin clay lenses, fin e

to coarse, angular to rounded ,

moderately well-sorted, takin g

water .

114-165

Clay, very silty, sandy, pebbly ,

a few cobbles, occasional thi n

gravel lenses, olive gray (till) .

Fox Hills Formation

165-180

Shale, very silty, moderatel y

sandy, medium gray to medium

dark gray, light olive gray to

dark greenish-gray mottling ,

non-calcareous, slightl y

indurated to indurated, bedded .

Observation Well s

South Well : Depth 113 fee tScreened interval 107-11 3fee t

North Well : Depth 63 fee tScreened interval 57-63 fee t

Chemical Analyse s

Electric Log

-18-

TEST HOLE 577 0

LOCATION : 138-72-1 ccc DATE DRILLED: August 28, 197 0

ELEVATION : 1790

DEPTH : 140

(FT, MSL)

(FT )

RESISTANCE (OHMS)


Glacial Drif t

0-1

Topsoil, sandy, silty, brownish -

black .

fluvial sediment) .

1-62

Clay, very silty, olive gray wit h

light olive gray mottling, highl ycalcareous (glaciofluvia l

sediment) .

0

Gravel, very sandy to moderatel ysandy, fine to coarse (predomin-

antly fine to medium), angula r

to rounded, moderately well -

80-97



97-105

Clay, very silty, sandy, olivegray with light olive gra y

mottling, highly plastic, ver y

calcareous, detrital lignit e

chips (glaciofluvial sediment) .

105-12 1'

Clay, silty, sandy, pebbly ,olive gray (till) .

Fox Hills Formatio n

124-140

Shale, very silty, sandy ,

grayish-brown with darkgreenish-gray layering ,moderately indurated, non-

calcareous .


Screened Interval 72-78 fee tChemical Analysi s

Electric Log

POTENTIAL (MV)

1-12

Sand, very slightly gravelly ,

very fine-to very coarse-

grained, subangular to rounded ,

moderately well-sorted, slightl yoxidized .

12-21 Clay, very silty, dark yellowish -

brown with olive gray mottling ,

partially oxidized (glacio -

sorted, occasional thin cla ylenses .

-19 -

TEST HOLE 577 4

LOCATION : 138-72-7aaa

ELEVATION : 173 0

(FT, MSL)

DATF DRILLED : August 31, 197 0

DEPTH : 300(FT )


Glacial Drif t

0-I


dark brown .

1-13

Clay, very silty, dark yellow-

ish-brown with olive gray to

moderate yellowish-brow n

mottling, highly plastic ,

oxidized (glaciofluvia l

sediment) .

3-23

Clay, same as above, only oliv e

gray (glaciofluvial sediment) .

23-55

Sand, occasional thin clay

lenses, very fine-to medium-

grained, subangular to rounded ,

moderately well-sorted .

55-88

Clay, very silty, sandy, oliv e

gray, highly plastic, verycalcareous (glaciofluvia l

sediment) .

88-106


pebbly, a few cobbles, oliv e

gray (till) .

106-16'

= nd, very fine-to medium-

grained, subangular to rounded ,well-sorted .

1 .0-250

Clay, very sandy to sandy ,

silty, pebbly, a few cobbles ,

olive gray (till) .


LOCATION : 138-72-7aaa

DATE DRILLED August 31, 197 0

ELEVATION : 1730

DEPTH: 300

(FT, MSL)

(FT )

POTENTIAL (MV) RESISTANCE (OHMS)uus.

"o:Qt

26 0

p~94 in9


250-280

Clay, silty, sandy, pebbly ,

gravelly, olive gray (till) .

Pierre Formatio n

280-300

Shale, siliceous, grayish -

slack, indurated, non-calcar -

eous, bedded .

Observation Well sEast Well : Depth 143 fee t

Screened Interval 137-143 feet

West Well : Depth 50 fee t

Screened interval 47-50 fee t

Chemical Analyse sElectric Log

300

- 320

- 340

-360

- 380

- 400

420

440

46 0

480

-Y1 -

TEST HOLE 591 6

LOCATION: 1 313-7 3-8 dd d

ELEVATION: 1,73 0(FT, MSL)

DATE DRILLED : October 17, 197 0

'DEPTH :

28 0(FT )

POTENTIAL (MV)

0-6

6-13


Glacial Drif t

Sand, fine- to medium-grained .

Clay, silty, yellowish-brown ,


sediment) .

13-79

Clay, sandy, silty, occasiona l

thin sand lenses, olive gra y


79-93

Sand . fine- to medium-grained .

93-98

Gravel, sandy, very clayey, fine

to medium .

-113

Clay, very silty, olive gray ,

(glaciofluvial sediment) ,

113-122

Gravel, moderately sandy ,

occasional thin clay lenses ,

fine to medium .

O

0-144

Sand, fine- to coarse-grained .

144-155

Clay, sandy, silty, occasiona l



155- 60

Gravel, fine to coarse ,

160-161

Boulder, granite .

161-210

Clay, silty, a few cobbles ,olive gray (till) .

210-234

Gravel, occasional clay lenses ,

fine to coarse, sane cobble-

sized material .

Clay, silty, gravelly, occasiona l

cobbles, olive gray (till) .


LOCATION : 138-73-8ddd

DATE DRILLED : October 17, 197 0

'ELEVATION : 1,730

DEPTH: 280

(FT, MSL)

(FT )

DESCRIPTION OF DEPOSITS

Pierce Formatio n

262-280

Shale, siliceous, brownish-

black .

Observation Wel lDepth 21 3

Screened Interval 207-213 fee t

Chemical Analysi s

Electric Log

TEST HOLE 5759

LOCATION: 139-71-20bbb

ELEVATION: 1745

(FT, MSL)

DATE DRILLE D

DEPTH : 28 0(FT)

August 20, 197 0

POTENTIAL (MV)

0-1

Topsoil, sandy, silty, brown .

to

very coarse-grain , subangular


sorted, well oxidized .

11-32

Clay, very silty, olive gra y

with light olive gray mottling ,

highly plastic, (glaciofluvia l

sediment) .

32-69

Sand, silty, clayey, very fine-

to medium-grained, subangula r


sorted .

75

Clay, very silty, very sandy ,

olive gray, highly plasti c

(glaciofluvial sediment )

75-250

Clay, silty to very silty ,

sandy, pebbly, a few cobbles ,

ve gray to medium dar k

gray (till) .

-24-


LOCATION: 139-71-20bb b

ELEVATION: 1745(FT, MSL)

August 20, 197 0DATE DRILLE D

DEPTH : 280(FT )

POTENTIAL (MV)

RESISTANCE (OHMS)


Pierre Formatio n

250-280 Shale, siliceous, grayish -black to black, indurated ,non-calcareou s

Electric Log

TEST HOLE 577 2

LOCATION: 139-71-29ccc

ELEVATION: 1,77 5(FT, MSL)


160DEPTH :

(FT )


Glacial Drif t

0-i


pebbly, brownish-black .

1-10

Sand, very slightly gravelly ,silty, very fine- to coarse-

grained, subangular, moderatel y

well-sorted, oxidized .

10-20

Clay, very silty, sandy, dark

yellowish-brown with olive gra y

mottling, highly plastic ,


sediment) .

20-31

Sand, slightly clayey, ver y

fine- to medium-grained, sub-

angular to subrounded, modera-

tely well-sorted .

31-43

Clay, very silty, occasiona l

thin sand lenses, olive gray


highly plastic, very calcareous


43-68 Sand, very fine- to medium -

grained, subangular to sub -

rounded, moderately well-sorted .

68-136

Clay, very sandy, silty, gravel-

ly, pebbly, olive gray,(till) .

136-151

Gravel, slightly sandy, fine to

coarse (some cobble- and boulder -

sized material), angular t o

well-rounded, fair sorting ,

about 40 percent carbonates, 40

percent siliceous rocks -

quartzite, chalcedony, agate ,

granite and sandstone, 20 per-

cent shale and sandstone ,

taking water, caving in .

Pierre Formatio n

151-160 Shale, siliceous, grayish -

black to black, indurated ,

non-calcareous, bedded.


Screened Interval 142-148 fee t

Chemical Analysi sElectric Log

-26-

TEST HOLE 576 0

LOCATION: 139-72-24bb b

ELEVATION: 1768(FT, MSL )

POTENTIAL (MV)

DATE DRILLED : August 21, 1970

DEPTH : 36 0(FT )


Glacial Drif t

0-1

Topsoil, very sandy, silty ,T•nl~

1-19

S

ty, very fine- t o

very

. fined, subangula rmoderately well -

sorted, oxidized .

19-23

Clay, very silty, dark yellowish -

brown with light olive gra y

mottling (glaciofluvial sediment).

23-68 Sand, silty, occasional thi nclay lenses, very' fine- t omedium-grained (mostly very

fine- to fine-grained), sub -

angular to rounded, well-sorted .

68-74

Clay, very silty, olive gra ywith light olive gray mottling ,

highly plastic (glaciofluvia l

sediment) .

74-80 Sand, silty, clayey, very fine -

to fine-grained, subangular to

rounded, well-sorted .

80-133

Clay, very silty, very sandy ,

olive gray with occasiona llight olive gray mottling, ver y

plastic, (glaciofluvia l

sediment) .

133-160

Gravel, moderately sandy, occas -

ional thin clay lenses, fine tocoarse, subangular to rounded ,

fair sorting, about 40 percen t

carbonates, 30 percent shale ,30 percent siliceous rocks ,

_'~----~:i„r. water .

160-179 Sand, very silty, clayey, ver yfine- to medium-grained, sub-

angular to rounded, moderatel ywell-sorted .

01

Gravel, very sandy, a few thi n

clay lenses, fine to medium ,subangular to rounded, moder-

ately well-sorted .

201-234

and, very fine- to ver y

arse-grained (mostl yedium- to coarse-grained) ,

subangular to rounded, moder-

ely well-sorted .

234-340

ay, very silty, olive gra y

to medium dark gray, highl y

tic, very calcareous ,

s detrital lignitecc ips (glaciofluvia l

sediment) .

TEST HOLE 5760 continued

LOCATION :

I39-72-24bbb DATE

DRILLED:

August 21, 197 0

ELEVATION :

176 8

(FT, MSL)

DEPTH :(FT)

360


340-355

Clay . silty, sandy, pebbly ,olive gray (till) .

Pierre Formation

355-360 Shale, siliceous, grayish -black to black, indurated ,non-calcareous .

Observation Well sWest Well : Depth 203 fee t

Screened Interval 197-203 fee tEast Well : Depth 83 fee t

Screened interval 77-83 fee tChemical Analyse s

Electric log

TEST HOLE 5776

LOCATION: 139-72-31aa a

ELEVATION : 1765

(FT, MSL )

POTENTIAL (MV)

DATE DRILLED : September 2, 197 0

DEPTH : 20 0

(FT )


lenses, very fine- to medium -

grained, subangular to sub -rounded, moderately well -

sorted .

62-81

Clay, very silty, olive graywith light olive gray mottling ,highly plastic (glaciofluvia l

sediment) .

115

Sand, a few thin clay lenses ,

yy fine- to coarse-graine d

(mostly medium-grained), sub-angular to rounded, moderatel y

well-sorted .

'F22-128 Sand, thin clay lenses, fine-

to medium-grained, subangula r

to rounded, well-sorted .

—~ff8-136 Clay, very silty, occasiona l


. th light olive gray mottlin g


136-158 Sand, occasional thin cla ylenses, very fine- to ver ycoarse-grained (mostly medium-

grained), subangular to

ounded, well-sorted .

158-172 Gravel, sandy, fine to coars e

(some cobble- and boulder -

sized material), subangula rto rounded, fair sorting ,

about 40 percent carbonates ,30 percent shale, 30 percen t

siliceous rocks, takin g

water, caving slightly .

172-176 Clay, silty, moderately sandy ,pebbly, olive gray (till) .

Pierre Formatio n

176-200 Shale, siliceous, grayish -

black to black, indurated ,non-calcareous, bedded .

Observation Wel l

Depth 163 fee tScreened Interval 157-163 fee t

Chemical Analysi s

Electric Lo g

Glacial Drif t

0-}


brown .

Z-13

Sand, silty, very fine- to

ium-grained, subangular t owaeed, well sorted, oxidized .

- 9

Clay, very silty, olive gray(glaciofluvial sediment) .

29

Sand, occasional thin clay

-29-

LOCATION : 139-72-31dd d

ELEVATION : 1740

(FT, MSL)

TEST HOLE 5775

DATE DRILLED: September 1, 197 0

DEPTH: 400(FT )


Glacial Drif t

0-4

Sand, very fine- to medium-

grained, moderately well -

sorted, angular to subangular .

16

Clay, silty, grayish yellow ,


16-20

Clay, sli htl

silty, medium

r.~

ac,o uvial sediment) .

20-56

Sand, silty, occasional cla y

lenses, fine- to medium-grained ,

subangular .

56-68

Clay, silty, sandy, medium gra y


68-94

Sand, gravelly, medium- t overy coarse-grained, subangula r

to subrounded, fair sorting .

84-I11

Clay, slightly silty, mediu m

light gray (glaciofluvia l

sediment) .

III-160 Sand, a few thin clay lenses ,fine- to medium-grained, sub -

angular to subrounded, well -

sorted .

160-177 Sand, a few thin clay lenses ,

slightly gravelly, medium- t o

coarse-grained, subangular t o

subrounded, moderately well -

sorted .

177-246

Clay, very silty, sandy, pebbly ,

cobbles and boulders, medium

dark gray, occasional sand an d

gravel lenses (till) .


LOCATION : 139-72-31dd d

ELEVATION : 1740(FT, MSL )

POTENTIAL (MV) RESISTANCE (OHMS)

DATE DRILLED : September 1, 197 0

DEPTH : 400(FT )


246-258e- to coarse-graine d

S Imb tly medium-grained), sub -angular to subrounded, modera-tely well-sorted .

260

280

300

258-278 Clay, very silty, sandy, pebbly ,cobbles and boulders, occasiona lsand and gravel lenses, olivegray (till) .

278-370 Gravel, slightly sandy, coarse(some cobble- and boulder-size dmaterial), subangular to sub -rounded, moderately well sorted ,about 75 percent shale, 25 per-cent granitics, carbonates an dbrownish siliceous rocks, takin gsome water .

;%0

- 340

30*

4CV

Pierre Formatio n

370-400 Shale, siliceous, medium dar kgray, non-calcareous, indurated ,bedded .

Observation Well sSouth Well : Depth 344 fee t

Screened Interval 338-344 fee tNorth Well : Depth 163 fee t

Screened Interval 157-163 fee tChemical Analyse s

Electric Log

420

440

460

-31 -

480

139-73-13dd dTest Hole 591 4

Elevation 1815 feetDATE DRILLED: 11-12-7 0

Geologic

Thickness

Dept hsource


Glacial Drift :Topsoil, silty, moderately sandy ,

pebbly, brownish-black 1

1Clay, very silty, moderately sandy ,pebbly, dusky yellow to moderat eyellowish-brown, oxidized

(till)-- 28

29

Fox Hills Formation :Sandstone, very fine-to fine-grained ,dark reddish-brown to yellowish -brown, slightly cemented to wel lcemented, well oxidized and iron -stained, upper 5-10 feet o fsection highly calcareous, other -wise non-calcareous, bedded 26

5 5Sandstone, interbedded with shale ,fine-grained, moderately clayey ,moderately sandy, medium bluish -gray to dark greenish-gray ,slightly cemented to well cemented ,non-calcareous, slightly micaceous ,bedded 25

8 0

139-73-15dddTest Hole 591 5

Elevation 1875 feetDATE DRILLED: 11-12-7 0

Geologic

Thickness

Depth source

Material (feet)

(feet )

Glacial Drift :Topsoil, clayey, moderately sandy ,

pebbly, brownish-black I

1Clay, silty, moderately sandy ,occasional cobbles, dark yellowish -brown, oxidized (till) 50

5 1

Fox Hills Formation :Sandstone, very fine-to fine-grained ,

interbedded with moderately clayey ,sandy shale, dark reddish-brow nto dark yellowish-brown with mediumdark gray to greenish-gray mottling ,partially oxidized to oxidized ,moderately indurated, well cemented ,non-calcareous 29

80

TEST HOLE 5756

LOCATION : 140-71-2bbb


ELEVATION: 191 0(FT, MSL)

DEPTH : 40 0(FT )


Glacial Drif t0-I

Topsoil, silty, pebbly, cobbles ,

boulders, grayish-black .

1-3 Clay, silty, moderately sandy, peb -

bly, cobbles, boulders, moderate

yellowish-brown, oxidized (till) .

3-31

Clay, very silty, dark yellowish -

brown with light olive gra y

to dark gray mottling, highl y

plastic, very calcareous ,partially oxidized (glacio-

fluvial sediment) .

31-57

Clay, very silty, olive gra y


highly plastic, very calcareou s


57-59

Sand, very fine-to medium-

grained, subangular, moderatel ywell-sorted .

59235 Clay, very silty, pebbly, olive

gray to medium dark gray (till) .

235-286 Clay, very silty, olive gray wit h

light olive gray mottling ,

highly plastic, very calcareous ,

numerous detrital lignit e

frayr .ents (glaciofluvial sedi-ment t .

286-395 Clay, silty, moderately sandy ,

cobbles (numerous cobbles an d

boulders lower 40 feet o fsection), medium dark gra y

(till) .

TEST HOLE 5756 Continue d

LOCATION: 140-71-2 b bb

ELEVATION : 191 0(FT, MSL)


DEPTH : 400(FT )

RESISTANCE (OHMS)


Pierre Formation

395-400 Shale, siliceous, grayish-blac kto black, indurated, non-calcareous .

Electric log

-35-

140-71-5aa aTest Hole 5757

DATE

DRILLED: 8-20-70Elevation 1754 fee t

Geologic

Thickness

Depthsource


Glacial Drift :Topsoil, sandy, silty, pebbly ,

brownish-black 1

1Clay, very silty, sandy, pebbly ,moderate yellowish-brown, oxidized(till) 4

5Sand, silty, slightly clayey, ver y

fine-to coarse-grained, subangula rto rounded, moderately well-sorted ,oxidized 8

1 3Clay, silty, slightly sandy, pebbly ,a few cobbles, olive gray (till) 49

6 2Sand, slightly gravelly, very fine

to very coarse-grained (mostl ymedium-to coarse-grained), sub -angular, moderately well-sorted ,slightly oxidized 13

75Clay, silty to very silty, slightl y

sandy, occasional cobbles andboulders, olive gray to mediumdark gray (till) 185

260

Pierre Formation :Shale, siliceous, grayish-blac k

to black, indurated, non -calcareous 20

280

-36-

TEST HOLE 5758

LOCATION: 14n-7I-19ddd


ELEVATION : 1760

DEPTH : 40 0(FT )

RESISTANCE (OHMS)

DESCRIPTIONEPOSIT S

Glacial Drif t

O-;

Topsoil, very sandy, silty ,brown .

1-26

Sand, silty, very fine-to verycoarse-grained, subangula rto subrounded, moderately well -sorted, well oxidized .

26-50

Clay, very silty, olive gra y(glaciofluvial sediment) ,

Sand, very fine-to medium -grained, occasional thin cla ylenses, subangular to rounded ,well-sorted, taking some water ,not caving in .

89-95

Clay, very silty, olive gray(glaciofluvial sediment) .

V-2t

95-98 Sand, neom-grainedd, , subangular

tto sub -

:P*1

rounded, moderately well-sorted .98-113 Clay, silty, moderately sandy ,


Gravel, slightly sandy, fine tocoarse (some cobble-size dmaterial), fair sorting, angula rto rounded, taking some water ,caving slightly .

126-300 Clay, silty, slightly sandy ,occasional thin sand lense slower 40 feet of section ,pebbly, a few cobbles, oliv egray to medium dark gray (till) .

-37 -

(FT, MSL )

POTENTIAL (MV)


LOCATION : 140-71-19ddd


ELEVATION: 1760

(FT, MSL)

DEPTH : 400

(FT )


300-183 Clay, silty, sandy, numerou sthin sand lenses, cobbles ,

olive gray to medium dark

gray (till) .

Pierre Formation

383-400 Shale, siliceous, grayish-blac kto black, indurated, bentoniti cmottling, non-calcareous .

Observation wel lDepth 123 fee t

Screened interval 117-123 fee t

Chemical analysi s

Electric log

TEST HOLE 591 3

LOCATION :

Iyv-li-2odaa

DAiE DRILLED : October 12, 1970

ELEVATION : 176 5(FT, MSL )

POTENTIAL (MV)

DEPTH : 28 0(FT )

RESISTANCE (OHMS)


Glacial Drif t

Topsoil, very sandy, pebbly ,brownish-black .

Sand, slightly gravelly, silty ,very fine-to very coarse -grained (mostly medium-grained) ,subangular to rounded, mod-erately well-sorted, takin gsome water, slightly oxidized .

33-53

Clay, very silty, a few thi nsand lenses, dark gray (glacio -fluvial sediment) .

53-70 Sand, slightly clayey, silty ,very fine-to medium-grained ,subangular to rounded, well -sorted, taking some water .

70-88

Clay, very silty, medium darkgray with light olive gra ymottling (glaciofluvia lsediment) .

Gravel, fine to coarse, angula rto rounded, fair sorting .

92-102 Clay, very silty, medium dar kgray with light olive gra ymottling (glaciofluvlal sed-iment) .

102-256 Clay, silty, slightly sandy ,pebbly, occasional cobbles ,olive gray (till) .

-39-

TEST HOLE 5913 Continued

LOCATION :

140-71-28daa

ELEVATION : 176 5(FT, MSL)

DATE DRILLED:

DEPTH: 280(FT)

October 12, 197 0

300

34 U

31., 0

380

- 400

- 420

440

460


Pierre Formation

256-280 Shale, siliceous, grayish-black,indurated, non-calcareous ,bedded .

Observation well sSouth well : depth 68 fee tNorth well : depth 33 fee tScreened interval 62-68 fee tScreened interval 30-33 fee tChemical analyse sElectric lo g

POTENTIAL (MV)

-40-

480

141-70-6ba aTest Hole 5753

DATE DRILLED : 8-18-70

Geologic

Thickness

Depth source


Glacial Drift :Topsoil, very sandy, silty, brown - -Sand, slightly gravelly, very fine -

to very coarse-grained (mostl ymedium-grained), subangular tosubroundcd, moderately well -sorted, taking water rapidly ,mixed 100 lbs . bentonite ,oxidized

Gravel, sandy, fine to coarse (som ecobble-sized material), subangula rto rounded, fair sorting, takingwater, caving slightly

Clay, silty, moderately sandy, pebbly ,olive gray (till)

Gravel, sandy, cobbles and boulders ,fine to coarse, subangular t orounded, poorly sorted, caving in ,mixed 50 lbs . bentonite

Clay, silty, slightly sandy, pebbly ,occasional cobbles, olive gra y(till)

Gravel, sandy, clayey, fine to coars e(some cobble-sized material), fai rto poor sorting, subangular t orounded, taking water

Clay, silty, sandy, pebbly, ver ygravelly, cobbles, olive gra y(till)

Sand, moderately clayey, slightl ygravelly, very fine-to very coarse -grained (mostly fine-to medium -grained), subangular to rounded ,moderately well-sorted

Clay, very silty, sandy, pebbly ,occasional thin sand lenses ,olive gray (till)

Sand, silty, clayey, very fine-t omedium-grained, subangular t orounded, moderately well-sorted --

Clay, very silty, slightly sandy ,pebbly, a few cobbles, mediu mdark gray (till)

-41-

23!. 2 4

15 3 9

10 49

8 5 7

34 9 1

II 10 2

13 11 5

39 154

19 17 3

13 186

86 272

141-70-6baa (Cont . )Test Hole 5753


Geologic

Thickness

Depth

source


Pierre Formation :Shale, siliceous, grayish-blac k

to black, indurated, bentonitic ,non-calcareous 8

280

Observation wel lDepth 143 fee tScreened interval 137-143 fee t

Chemical analysis

TEST HOLE 575 2

I41-70-8aaa DATE DRILLED : August 17, 1970

DEPTH : 38 0(FT )

LOCATION:

ELEVATION:(FT, MSL )

POTENTIAL (MV)

RESISTANCE (OHMS)


Glacial Drif t

0-1

Topsoil, sandy, silty, brownish-black .

1-15 Clay, moderately sandy, silty ,pebbly, moderate yellowish-brown (till) .

15-106 Clay, silty, slightly sandy ,pebbly, a few cobbles, olivegray (till) .

106-112 Gravel, sandy, fine to coarse ,angular to subrounded, fai rsorting, caving in mixed100 tbs . bentonite .

112-168 Clay, silty, moderately sandy ,pebbly, a few cobbles, oliv egray (till) .

168-201 Sand, very clayey, very fine -to very coarse-grained, sub-angular to rounded, fai rsorting .

201-260 Clay, silty, slightly sandy ,pebbly, a few cobbles, mediu mdark gray (till) .

-43-


LOCATION:

141-70-8aaa


ELEVAT ION:(FT, MSL)

DEPTH: 380(FT )

POTENTIAL (MV) RESISTANCE (OHMS)


260-377 Clay, silty, moderately, sandy ,pebbly, occasional thin sand ygravel lenses, a few cobble solive gray (till) .

Pierre Formation

377-380 Shale, siliceous, grayish-blac kto black indurated, non-calcareous, bedded .

Electric log

LOCATION : I41-70-22aa a

ELEVATION :(FT, MSL )

POTENTIAL (MV)

TEST HOLE 5755


DEPTH : 36 0(FT )

RESISTANCE (OHMS)


Glacial Drif t

0-I

Topsoil, sandy, silty, pebbly ,brownish-black .

1-15 Clay, silty, moderately sandy ,pebbly, moderate yellowish-brown, oxidized (till) .

15-17

Clay, silty, slightly sandy ,pebbly, olive gray (till) .

17-19

Gravel, clayey, sandy, fine t ocoarse, subangular, poorl ysorted .

19-134 Clay, silty to very silty ,slightly sandy, pebbly, olivegray to medium dark gray (till) .

134-139 Sand, slightly clayey, very fine -to medium-grained subangular ,fair sorting.

139-150 Clay, silty, slightly sandy ,pebbly, medium dark gray (till) .

150-209 Clay, very silty, olive gra ywith light olive gray to dar kgray mottling, occasiona ldetrital lignite fragment s(glaciofluvial sediment) .

209-336 Clay, silty, moderately sandy ,pebbly, a few cobbles, gravelly ,medium dark gray (till) .


LOCATION: 141-70-22aaa

ELEVATION :

(FT, MSL)

DATE DRILLED : August 18 . 1970

DEPTH: 360(FT )


Pierre Formation

Shale, siliceous, grayish-blac k

to black, indurated, non-calcareous .

Electric lo g

336-36o

142-70-9aa aTest Hole 2498


Geologic

Thickness

Dept h Source


Glacial Drift :Sand, gravelly, poorly sorted, sub -

angular

to subrounded, oxidized 61 6 1Silt,

dusky

yellow,

slightly cohes -ive,

oxidized 4 6 5Clay,

silty,

sandy,

pebbly, moderat eolive brown,

oxidized

(till) 4 69Clay,

silty,

sandy,

pebbly,

olivegray

(till) 4 7 3Sand,

gravelly,

thin

clay

lenses ,medium-

to coarse-grained, well -sorted,

lignitic,

taking water ---- 51 124Clay,

silty,

sandy,

light olive

gra yto olive gray, calcareous 67 19 1

Sand,

clayey,

fine-grained,

dar kgreenish-gray 33 224

Gravel,

sandy,

fine to coarse, mod -erately well-sorted,

subangular

tosubrounded 13 237

Clay,

sandy,

olive gray 5 242Gravel,

sandy,

fine

to coarse, moderately well-sorted,

subangular tosubrounded 8 25 0

Clay,

silty,

sandy, olive

gray

t olight olive gray,

lignitic,

poo rsamples 68 31 8

Pierre Formation :

Shale, olive black, hard,

non-calcar-eous 10 328

Observation wel lDepth 90 fee tSlotted interval 70-90 fee tElectric log

-47 -

142-70-16dd dPL Co . 5

DATE DRILLED : 10-4-6 5

Geologic

Thickness

Dept h

Source


Glacial Drift :Sand, gravelly, fine- to coarse-

grained, moderately well-sorted ,subrounded, oxidized 26

26

Clay, silty, sandy, pebbly, grav -elly, olive gray (till) 15

4 1

Sand, gravelly, medium- to ver ycoarse-grained, subrounded 21

6 2

Clay, silty, pebbly, olive gra y

(till) 17

7 9Clay, olive gray 5

8 4

Observation wel lDepth 70 fee tScreened interval 67-70 fee t

-48-

142-71-35dd dTest Hole 5754


Geologic

Thickness

Dept h source


Glacial Drift :Topsoil, very sandy, silty, brown --

z

zSand, moderately gravelly, very fine -

to very coarse-grained, subangula rto rounded, moderately well-sorted ,well oxidized, taking water, mixe d100 lbs. bentonite 26z

2 7Clay, silty, moderately sandy, pebbly ,olive gray (till) 12

3 9Sand, silty, slightly clayey, ver y

fine-to very coarse-grained (mostl ymedium-grained), subangular t orounded, moderately well-sorted --

18

5 7Clay, very silty, sandy, olive graywith light olive gray mottling(glaciofluvial sediment) 22

79Clay, silty, slightly sandy, pebbly ,

a few cobbles, olive gray (till) 35

114Sand, very fine-to very coarse-graine d

(mostly fine-to medium-grained), sub-angular to rounded, well-sorted ,taking water 56

170Gravel, very sandy, fine to medium ,

subangular to rounded, moderatel ywell-sorted, taking water 19

189Clay, very silty, olive gray with ligh tolive gray mottling, highly plastic ,very calcareous (glaciofluvial sedi -ment) 33

222Clay, silty, slightly sandy, pebbly ,olive gray (till) 24

246

Pierre Formation :Shale, siliceous, grayish-black t oblack, moderately indurated, non -calcareous 14

260

Observation wel lDepth 183 fee tScreened interval 177-183 fee tChemical analysi s

-49-

TEST HOLE 5749

LOCATION: 143-70-I0ddd

ELEVATION :(FT, MSL)


DEPTH : 58 0(FT )


GlacialDrif t

0-1

Topsoil, silty, clayey, sandy ,brownish-black .

1-51

Clay, silty, moderately sandy ,pebbly, a few cobles, moderat eyellowish-brown, oxidized(till) .

51-360 Clay, silty, slightly sandy ,pebbly, a few cobbles, olivegray, losing circulation t osurface cracks and crevasses ,mixed 200 lbs . bentonit e(till) .

TEST HOLE 5749 continued

LOCATION: ,g.70-,o a

ELEVATION :

Et mu

DATE DRILLEO : August 4, 1970

DEPTH : 58 0(FT )

POTENTIAL (MV) DESCRIPTION soas

480

360-508 Clay, silty, moderately sandy, 'pebbly, a few cobbles ,occasional thin (a few inche sthick) gravel lenses, olivegray (till) .


DATE DRILLED :

August 4, 1970

DEPTH :

58 0

LOCATION :

143-70-10ddd

ELEVATION :(FT, NSL}

(FT )

508-513 Gravel, sandy, clayey, fine t ocoarse (some cobble-sizedmaterial), angular to sub-rounded, poorly sorted .

513-515 Clay, silty, sandy, pebbly ,olive gray (till) .

515-522 Gravel, very sandy, clayey, fin eto coarse, angular to sub-rounded, poorly sorted .

522-558 Clay, silty, moderately sandy ,pebbly, a few thin grave llenses, olive gray (till) .

Pierre Formatio n

558-580 Shale, siliceous, grayish-blac kto black, non-calcareous, afew yellowish-gray limestoneconcretions, indurated .

Electric log

-52-

143-70-27adaTest Hole 5750


Geologic

Thickness

Dept h source


Glacial Drift :Topsoil, sandy, pebbly, cobbles ,

boulders, brownGravel, very sandy, silty, clayey ,

fine to coarse (some cobble-size dmaterial), angular to subrounded ,fair sorting, well oxidized, takin gwater, caving slightly, mixed 150 tbs .bentonite 192

2 0Clay, silty, moderately sandy, pebbly ,a few cobbles and boulders, oliv egray (till) 21

4 1Clay, very silty, moderately sandy ,olive gray, occasional detrita llignite fragments (glaciofluvia lsediment) 77

11 8Clay, silty, slightly sandy, pebbly ,

a few cobbles and boulders, oliv egray (till) 21

139Sand, fine-to very coarse-grained ,angular to subrounded, moderatel ywell-sorted 7

146Clay, silty, sandy, pebbly, a few

sand lenses, olive gray (till) 9

15 5Sand, silty, clayey, fine-to medium

grained, moderately well-sorted ,subangular to rounded 3

15 8Clay, silty, moderately sandy to

sandy, pebbly, a few cobbles, olivegray 22

180Sand, very silty, interbedded withclay lenses, fine-to very coarse grained, subangular to rounded ,moderately well-sorted 51

23 1Clay, very silty, slightly sandy ,occasional thin sand lenses from231-245 feet, medium gray (glacio lacustrine sediment) 47

278Clay, silty, slightly sandy, pebbly ,occasional cobbles and boulders ,olive gray (till) 22

32 0

Pierre Formation :Shale, siliceous, grayish-black t oblack, moderately indurated, non-calcareous 20

34 0

-53-

TEST HOLE 575 1

LOCATION : 144-70-26ccc

DATE DRILLED : August II, 1970

ELEVATION:

DEPTH : 680(FT, MSL)

(FT )

RESISTANCE (OHMS)


GlacialDrif t

0-1

Topsoil, sandy, silty, pebbly ,cobbles, brownish-black .

1-30

Clay, silty, moderately sandy ,pebbly, a few cobbles, moderat eyellowish-brown to dar kyellowish-brown with reddish-brown and light olive gra ymottling, oxidized (till) .

30-41

Clay, silty, slightly sandy ,pebbly, a few cobbles, olivegray (till) .

41-47 Sand, fine-to very coarse -grained, subangulay moderatel ywell-sorted .

'

47-62

Clay, very silty, slightly sandy ,medium gray to olive gray wit hlight olive gray mottling(glaciofluvial sediment) .

62-276 Clay, silty, slightly sandy ,pebbly, a few cobbles, oliv egray (till) .


LOCATION: 144-70-26ccc

DATE DRILLED : August 11, 1970

ELEVATION:(FT, MSL)

DEPTH : 68 0(FT )

458-597 Clay,

silty, moderately sandy ,

460gravelly ,cobbles,

pebbly, a fewolive gray to medium

z -55-

dark gray (till) .

ri'480

POTENTIAL (MV)

R ESISTANCE (OHMS)


276-360 Sand, slightly silty, a fewthin clay lenses, very fine-to very coarse-grained(mostly fine-to medium-grained), subanqular torounded, well-sorted .

360-458 Clay, silty, moderately sandy ,pebbly, a few cobbles, mediumdark gray (till) .

ya3GO

,

ohs

~,

. •'dv - 42 0

' c?̀

C `Ot 440otr rasto$

iefiO9C


LOCATION :

144-70-26ccc

DATE DRILLED :

August 11, 1970

ELEVATION :

DEPTH :

680(FT, MSL)

(FT )

POTENTIAL (MV)

RESISTANCE (OHMS)


597-600 Sand, silty, clayey, very fine -to medium-grained, sub-angular to subrounded, moder-ately well-sorted .

600-670 Clay, silty, moderately sandy .pebbly, gravelly, occasiona lcobbles, medium dark gray(till) .

Pierre Formatio n

670-680 Shale, siliceous, grayish-blac kto black, indurated, bentonitic ,non-calcareous .

Observation wel lDepth 343 feetScreened interval 337-343 fee tElectric log

-56 -

-1971- - north dakota · tm 5754 142-71-35000 183 177-183 8-20-70 24 4.3 177 48 106 9 .6 647 293...

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